<!DOCTYPE html>
<html lang="zh-CN">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    html {
      background-color: rgba(17, 119, 255, 0.5);
      background-image: url(../../assets/images/Cheems.jpg);
      background-repeat: no-repeat;

      /*
        背景图片的位置
        background-position: 水平 垂直;
         ● 水平：left center right 偏移量
         ● 垂直：top center bottom 偏移量
       */
      background-position: center 100px;
    }
  </style>
</head>

<body>
</body>

</html>